bbbb bbci bbdd bbeb bcbc bcbp bccc bcci bcde bcec bcie bcpp bdbc bddc bdii bdpc bebb bebe bebi beci bede bedi beeb beed beep beic bibb bibe bibi bicc bice bici bide bidi bieb bied bipp bpcp c-cd cbbc cbcc cbce cbcp cbdb cbdc cbdi cbec cbee cbid cbpc cbpp ccbc cccb cccc ccci cccp ccdc ccdi ccdp cced ccee ccic ccid ccii ccip ccpe ccpp cd-e cddb cdec cdic cdii cebp cec- cece ceci cecp cedd cede cedi ceeb ceec ceip cepc cepe cepp cibc cibe cibi cicc cici cidc cide cidi cidp ciee ciid ciii cipp cpbc cpce cpeb cpep cpic cppd dbcc dbcp dbpc dbpd dcbc dccb dccc dcci dccp dcdb dcii dddd ddie debe debi dec- decc decd dece deci dedd dede dedi deeb deed deep deid deie deip depc depe depp dibb dibe dibp dice dici dide didi dieb died diep diii dipc dipe dipp dpbc dpci dpcp dpie dppc ebbc ebcc ebed ebic ebid ecbc ecbe eccb eccc ecce ecci ecdc eced ecib ecip ecpd ecpp eddc edde eddi eddp ede- edei edie edip eede eeee eid- eide eidi eiec eied eiei epcc epci epec epee epi- epic epid epie epip eppc eppp i-be ibec ibed ibid ibie icbc icbd icbp iccb iccc icci iccp icdc icdd icde icdp icec iced icee icpc icpd idbe idce idec ided idee idic idid idie iecc ieie iicd iide iied iiie iiii ipcc ipce ipdc ipdi ipec ipid ipie ippc pbcc pbed pcbc pccc pcce pcep pcip pcpb pcpp pdci pdcp pdic pece peci ped- pede pedi peec peed peep peip pepd pepe pepi pibb pibi picc pice pici pide pied piep piip pipe pipi pipp ppcc ppcd ppci ppib ppic ppid ppie pppd pppp